1/*
2 * Copyright (C) 2008 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.android.music;
18
19import android.app.Activity;
20import android.content.ContentResolver;
21import android.content.ContentValues;
22import android.database.Cursor;
23import android.media.AudioManager;
24import android.os.Bundle;
25import android.provider.MediaStore;
26import android.text.Editable;
27import android.text.TextWatcher;
28import android.util.Log;
29import android.view.View;
30import android.view.Window;
31import android.view.WindowManager;
32import android.widget.Button;
33import android.widget.EditText;
34import android.widget.TextView;
35import android.widget.Toast;
36
37public class RenamePlaylist extends Activity
38{
39    private EditText mPlaylist;
40    private TextView mPrompt;
41    private Button mSaveButton;
42    private long mRenameId;
43    private String mOriginalName;
44
45    @Override
46    public void onCreate(Bundle icicle) {
47        super.onCreate(icicle);
48        setVolumeControlStream(AudioManager.STREAM_MUSIC);
49
50        requestWindowFeature(Window.FEATURE_NO_TITLE);
51        setContentView(R.layout.create_playlist);
52        getWindow().setLayout(WindowManager.LayoutParams.MATCH_PARENT,
53                                    WindowManager.LayoutParams.WRAP_CONTENT);
54
55        mPrompt = (TextView)findViewById(R.id.prompt);
56        mPlaylist = (EditText)findViewById(R.id.playlist);
57        mSaveButton = (Button) findViewById(R.id.create);
58        mSaveButton.setOnClickListener(mOpenClicked);
59
60        ((Button)findViewById(R.id.cancel)).setOnClickListener(new View.OnClickListener() {
61            public void onClick(View v) {
62                finish();
63            }
64        });
65
66        mRenameId = icicle != null ? icicle.getLong("rename")
67                : getIntent().getLongExtra("rename", -1);
68        mOriginalName = nameForId(mRenameId);
69        String defaultname = icicle != null ? icicle.getString("defaultname") : mOriginalName;
70
71        if (mRenameId < 0 || mOriginalName == null || defaultname == null) {
72            Log.i("@@@@", "Rename failed: " + mRenameId + "/" + defaultname);
73            finish();
74            return;
75        }
76
77        String promptformat;
78        if (mOriginalName.equals(defaultname)) {
79            promptformat = getString(R.string.rename_playlist_same_prompt);
80        } else {
81            promptformat = getString(R.string.rename_playlist_diff_prompt);
82        }
83
84        String prompt = String.format(promptformat, mOriginalName, defaultname);
85        mPrompt.setText(prompt);
86        mPlaylist.setText(defaultname);
87        mPlaylist.setSelection(defaultname.length());
88        mPlaylist.addTextChangedListener(mTextWatcher);
89        setSaveButton();
90    }
91
92    TextWatcher mTextWatcher = new TextWatcher() {
93        public void beforeTextChanged(CharSequence s, int start, int count, int after) {
94            // don't care about this one
95        }
96        public void onTextChanged(CharSequence s, int start, int before, int count) {
97            // check if playlist with current name exists already, and warn the user if so.
98            setSaveButton();
99        };
100        public void afterTextChanged(Editable s) {
101            // don't care about this one
102        }
103    };
104
105    private void setSaveButton() {
106        String typedname = mPlaylist.getText().toString();
107        if (typedname.trim().length() == 0) {
108            mSaveButton.setEnabled(false);
109        } else {
110            mSaveButton.setEnabled(true);
111            if (idForplaylist(typedname) >= 0
112                    && ! mOriginalName.equals(typedname)) {
113                mSaveButton.setText(R.string.create_playlist_overwrite_text);
114            } else {
115                mSaveButton.setText(R.string.create_playlist_create_text);
116            }
117        }
118
119    }
120
121    private int idForplaylist(String name) {
122        Cursor c = MusicUtils.query(this, MediaStore.Audio.Playlists.EXTERNAL_CONTENT_URI,
123                new String[] { MediaStore.Audio.Playlists._ID },
124                MediaStore.Audio.Playlists.NAME + "=?",
125                new String[] { name },
126                MediaStore.Audio.Playlists.NAME);
127        int id = -1;
128        if (c != null) {
129            c.moveToFirst();
130            if (!c.isAfterLast()) {
131                id = c.getInt(0);
132            }
133        }
134        c.close();
135        return id;
136    }
137
138    private String nameForId(long id) {
139        Cursor c = MusicUtils.query(this, MediaStore.Audio.Playlists.EXTERNAL_CONTENT_URI,
140                new String[] { MediaStore.Audio.Playlists.NAME },
141                MediaStore.Audio.Playlists._ID + "=?",
142                new String[] { Long.valueOf(id).toString() },
143                MediaStore.Audio.Playlists.NAME);
144        String name = null;
145        if (c != null) {
146            c.moveToFirst();
147            if (!c.isAfterLast()) {
148                name = c.getString(0);
149            }
150        }
151        c.close();
152        return name;
153    }
154
155
156    @Override
157    public void onSaveInstanceState(Bundle outcicle) {
158        outcicle.putString("defaultname", mPlaylist.getText().toString());
159        outcicle.putLong("rename", mRenameId);
160    }
161
162    @Override
163    public void onResume() {
164        super.onResume();
165    }
166
167    private View.OnClickListener mOpenClicked = new View.OnClickListener() {
168        public void onClick(View v) {
169            String name = mPlaylist.getText().toString();
170            if (name != null && name.length() > 0) {
171                ContentResolver resolver = getContentResolver();
172                ContentValues values = new ContentValues(1);
173                values.put(MediaStore.Audio.Playlists.NAME, name);
174                resolver.update(MediaStore.Audio.Playlists.EXTERNAL_CONTENT_URI,
175                        values,
176                        MediaStore.Audio.Playlists._ID + "=?",
177                        new String[] { Long.valueOf(mRenameId).toString()});
178
179                setResult(RESULT_OK);
180                Toast.makeText(RenamePlaylist.this, R.string.playlist_renamed_message, Toast.LENGTH_SHORT).show();
181                finish();
182            }
183        }
184    };
185}
186